CN103834875B

CN103834875B - A kind of corrosion resistant elastic alloy material and preparation method thereof

Info

Publication number: CN103834875B
Application number: CN201410091630.4A
Authority: CN
Inventors: 曹静; 吕存军; 程付理; 谷伟; 王志卿
Original assignee: Anhui Feiintool Elevator Co ltd
Current assignee: Anhui Feiintool Elevator Co ltd
Priority date: 2014-03-13
Filing date: 2014-03-13
Publication date: 2016-01-06
Anticipated expiration: 2034-03-13
Also published as: CN103834875A

Abstract

A kind of corrosion resistant elastic alloy material, the chemical element composition that it contains and mass percent thereof are: C0.1-0.34, silicon 0.5-0.8, manganese 1.5-1.8, Mo4.0-4.5, Cr0.04-0.07, Co0.5-0.8, Ni4.0-4.5, vanadium 1.0-1.2, aluminium 0.06-0.08, niobium 0.2-0.4, P≤0.030, S≤0.030, surplus are iron.The present invention is by using rare earth element and other material combination, proportioning and production technique are rationally set, input order is rationally set, formation alloy material has high tensile strength, high rigidity, wear resistance is good, elastic limit is high, the feature such as corrosion-resistant, be applicable to the parts such as spring; And use part scrap iron as raw material, make the steady quality of alloy homogeneous; By adding refining agent, degree of porosity reduces 1-2 degree.

Description

A kind of corrosion resistant elastic alloy material and preparation method thereof

Technical field

The present invention relates to field of metal preparation, particularly relate to a kind of corrosion resistant elastic alloy material and preparation method thereof.

Background technology

The development of steel alloy has had the history of more than 100 year, up to the present, diversified steel alloy is industrially employed, mainly contain with Types Below: quenched and tempered steel, spring steel, tool steel, rapid steel, die steel, high, normal, basic carbon alloy steel etc., so far, although steel alloy technology is greatly developed, but, a lot of problem is still had to exist, as fastness to rubbing, hardness, rustless property, corrosion resistance nature, high and low temperature resistance, fragility, toughness, costs etc. can not be taken into account, the requirement of production can't be met in a lot of occasion, also require further improvement, to enhance productivity, reduce costs, improve security, for high-quality precision and sophisticated technology development provides safeguard, for social development provides power, task is also very arduous.

Summary of the invention

The object of the present invention is to provide a kind of corrosion resistant elastic alloy material and preparation method thereof, this alloy material has high tensile strength, good springiness, corrosion resistant feature.

Technical scheme of the present invention is as follows:

A kind of corrosion resistant elastic alloy material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: C0.1-0.34, silicon 0.5-0.8, manganese 1.5-1.8, Mo4.0-4.5, Cr0.04-0.07, Co0.5-0.8, Ni4.0-4.5, vanadium 1.0-1.2, aluminium 0.06-0.08, niobium 0.2-0.4, P≤0.030, S≤0.030, surplus are iron.

The production method of described corrosion resistant elastic alloy material, is characterized in that:

(1), the pig iron and scrap iron are dropped in stove to melt in 3:2 ratio originate as ferrous substrate; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment etc.;

(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) silicon, Cr; (2) Ni, niobium; (3) manganese, Mo; (4) other remaining component; The each batch of timed interval of dropping into element is 12-14 minute, stirs after feeding intake.

Described casting postheat treatment is: first by room temperature with 180-200 DEG C/h of ramp to 920-935 DEG C, insulation 3-4 hour; 620-630 DEG C is cooled to again, insulation 30-60 minute with 130-150 DEG C/h of speed; 320-340 DEG C is cooled to again, insulation 2-3 hour with 100-120 DEG C/h of speed; Again with 150-170 DEG C/h of ramp to 520-540 DEG C, insulation 2-3 hour, takes out air cooling and get final product.

Described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 3-4, clay 10-12, Wingdale 3-4, sepiolite 2-3, Sodium Silicofluoride 2-3, SODIUMNITRATE 1-2, vermiculite 5-6, silicon carbide 9-11, titanium dioxide 2-3, fluorite 6-8, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2; Each raw material mixes by preparation method, is heated to molten state and stirs remove slag, and then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2-3%, the nano-carbon powder of 1-2%, after mixing, under 8-15Mpa, be pressed into base, then, at 900-950 DEG C, 3-4 hour is calcined, after cooling, be ground into 150-250 order powder again, obtain final product.

Beneficial effect of the present invention

The present invention is by using rare earth element and other material combination, proportioning and production technique are rationally set, input order is rationally set, formation alloy material has high tensile strength, high rigidity, wear resistance is good, elastic limit is high, the feature such as corrosion-resistant, be applicable to the parts such as spring; And use part scrap iron as raw material, make the steady quality of alloy homogeneous.Refining agent of the present invention is used for Foundry Production, significantly improves yield rate, and the degree of porosity particularly in foundry goods reduces 1-2 degree, and be controlled effectively, can not produce pore at cast(ing) surface, trapped oxide also obviously reduces, and oxide inclusion is at about 2 grades.

Embodiment

A kind of corrosion resistant elastic alloy material, the chemical element composition that it contains and mass percent thereof are: C0.1-0.34, silicon 0.5-0.8, manganese 1.5-1.8, Mo4.0-4.5, Cr0.04-0.07, Co0.5-0.8, Ni4.0-4.5, vanadium 1.0-1.2, aluminium 0.06-0.08, niobium 0.2-0.4, P≤0.030, S≤0.030, surplus are iron.

(2) lot sequence, dropping into alloying element in alloying process in stove is: (1) silicon, Cr; (2) Ni, niobium; (3) manganese, Mo; (4) other remaining component; The each batch of timed interval of dropping into element is 13 minutes, stirs after feeding intake.

Described casting postheat treatment is: elder generation with 190 DEG C/h of ramp to 930 DEG C, is incubated 3.5 hours by room temperature; Be cooled to 625 DEG C with 140 DEG C/h of speed again, be incubated 50 minutes; Be cooled to 330 DEG C with 110 DEG C/h of speed again, be incubated 2.5 hours; Again with 160 DEG C/h of ramp to 530 DEG C, be incubated 2.5 hours, take out air cooling and get final product.

Described refining agent is made up of the raw material of following weight part (kilogram): instrument comminuted steel shot 4, clay 10, Wingdale 3, sepiolite 2, Sodium Silicofluoride 2, SODIUMNITRATE 2, vermiculite 5, silicon carbide 9, titanium dioxide 2, fluorite 8, aluminium hydroxide 8, jade powder 3, montmorillonite 2; Each raw material mixes by preparation method, is heated to molten state and stirs remove slag, and then, is poured into Quench in pure water, then is ground into 100-200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2%, the nano-carbon powder of 1%, after mixing, under 12-15Mpa, be pressed into base, then, at 900-950 DEG C, 3-4 hour is calcined, after cooling, be ground into 150-250 order powder again, obtain final product.

The mechanical property of corrosion resistant elastic alloy material of the present invention is: tensile strength 1380MPa, yield strength 973MPa, unit elongation 16%, relative reduction in area 35%, impact absorbing energy 56J, impelling strength 66J/cm2, hardness 273HB.

Claims

1. a corrosion resistant elastic alloy material, is characterized in that: the chemical element composition that it contains and mass percent thereof are: C0.1-0.34, silicon 0.5-0.8, manganese 1.5-1.8, Mo4.0-4.5, Cr0.04-0.07, Co0.5-0.8, Ni4.0-4.5, vanadium 1.0-1.2, aluminium 0.06-0.08, niobium 0.2-0.4, P≤0.030, S≤0.030, surplus are iron;

The production method of described corrosion resistant elastic alloy material is:

(1), the pig iron and scrap iron are dropped in stove to melt in 3:2 ratio originate as ferrous substrate; Carry out desulfurization, deoxidation, alloying, the refining of employing refining agent, casting, casting postheat treatment;

(2) lot sequence, dropping into alloying element in alloying process in stove is:

1) silicon, Cr;

2) Ni, niobium;

3) manganese, Mo;

4) other remaining component; The each batch of timed interval of dropping into element is 12-14 minute, stirs after feeding intake;

Described casting postheat treatment is: first by room temperature with 180-200 DEG C/h of ramp to 920-935 DEG C, insulation 3-4 hour; 620-630 DEG C is cooled to again, insulation 30-60 minute with 130-150 DEG C/h of speed; 320-340 DEG C is cooled to again, insulation 2-3 hour with 100-120 DEG C/h of speed; Again with 150-170 DEG C/h of ramp to 520-540 DEG C, insulation 2-3 hour, takes out air cooling and get final product;